| Hafnium, Hf; Rod | |
|---|---|
| Categories: | MetalNonferrous MetalPure Element |
| Material Notes: | Tensile and/or hardness values are for rod; other property values are typical of the element. Three entries for pure Hf are in MatWeb. Characteristics:
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Export data to your CAD/FEA program| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 13.31 g/cc | 0.4809 lb/in³ | |||
| Chemical Properties | Metric | English | Comments | ||
| Atomic Mass | 178.49 | 178.49 | 1995 | ||
| Atomic Number | 72 | 72 | |||
| X-ray Absorption Edge | 0.18981 Å | 0.18981 Å | K | ||
| 1.09864 Å | 1.09864 Å | LI | |||
| 1.15311 Å | 1.15311 Å | LII | |||
| 1.2957 Å | 1.2957 Å | LIII | |||
| Electronegativity | 1.3 | 1.3 | Pauling | ||
| Ionic Radius | 0.780 Å | 0.780 Å | Crystal Ionic Radius for Valence +4 | ||
| Mechanical Properties | Metric | English | Comments | ||
| Tensile Strength, Ultimate | 485 MPa | 70300 psi | |||
 | 310 MPa @Temperature 315 °C | 45000 psi @Temperature 599 °F | Longitudinal | ||
| Tensile Strength, Yield | 125 MPa @Strain 0.02 %, Temperature 315 °C | 18100 psi @Strain 0.02 %, Temperature 599 °F | Longitudinal | ||
| 240 MPa @Strain 0.02 %, Temperature 23.0 °C | 34800 psi @Strain 0.02 %, Temperature 73.4 °F | Longitudinal | |||
| Elongation at Break | 25 % | 25 % | |||
| Electrical Properties | Metric | English | Comments | ||
| Electrical Resistivity | 0.0000355 ohm-cm | 0.0000355 ohm-cm | |||
| Magnetic Susceptibility | 4.2e-7 | 4.2e-7 | cgs/g | ||
| Critical Magnetic Field Strength, Oersted | 12.7 | 12.7 | |||
| Critical Superconducting Temperature | 0.128 K | 0.128 K | |||
| Thermal Properties | Metric | English | Comments | ||
| CTE, linear | 5.90 µm/m-°C @Temperature 20.0 °C | 3.28 µin/in-°F @Temperature 68.0 °F | |||
| Specific Heat Capacity | 0.144 J/g-°C | 0.0344 BTU/lb-°F | |||
| Thermal Conductivity | 22.0 W/m-K | 153 BTU-in/hr-ft²-°F | |||
| Melting Point | 2207 – 2247 °C | 4005 – 4077 °F | |||
| Boiling Point | 3100 °C | 5610 °F | |||
| Component Elements Properties | Metric | English | Comments | ||
| Hafnium, Hf | 100 % | 100 % | |||
| Descriptive Properties | |||||
| Alpha phase Crystal Structure | hcp | < 1760°C | |||
| Atomic weight | 178.5 | ||||
| Beta Phase Crystal Structure | bcc | > 1760°C | |||
| CAS Number | 7440-58-6 | ||||
References for this datasheet.
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display the information in a consistent format. Users requiring more precise data for scientific or engineering
calculations can click on the property value to see the original value as well as raw conversions to equivalent units.
We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding
error. We also ask that you refer to MatWeb’s terms of use regarding this information.
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all the property values for this datasheet as they were originally entered into MatWeb.